Rename solana-wallet program to just solana (#5604)

* Rename wallet/ to cli/

* Rename the solana-wallet crate to solana-cli

* Rename solana-wallet program to solana

* cargo fmt

cli/cli-help.sh

@@ -0,0 +1,21 @@
+#!/usr/bin/env bash
+set -e
+
+cd "$(dirname "$0")"/..
+
+cargo build --package solana-cli
+export PATH=$PWD/target/debug:$PATH
+
+echo "\`\`\`manpage"
+solana --help
+echo "\`\`\`"
+echo ""
+
+commands=(address airdrop balance cancel confirm deploy fees get-transaction-count pay send-signature send-timestamp)
+
+for x in "${commands[@]}"; do
+    echo "\`\`\`manpage"
+    solana "${x}" --help
+    echo "\`\`\`"
+    echo ""
+done